date.md

Date

• dateIsBetween2Dates
• validateDate
• getWeekNumberOnIsoDate
• getAmountOfWeekNumbersOfYear

---

dateIsBetween2Dates

checks if a simplified ISO-date (Y-m-d) lays in between two other simplified ISO-Dates (Y-m-d).

Date::dateIsBetween2Dates(string $sDateIsoRangeStart = '', string $sDateIsoRangeEnd = '', string $sDateIso = '') : bool

Example

$bDateIsBetween2Dates = Date::dateIsBetween2Dates(
    '2023-12-24', # start Date
    '2024-12-24', # End Date
    '2024-06-19'  # Date we are interested in
);

Result

// type: boolean
true

---

validateDate

checks if a requested value equals to the requested date format.

Date::validateDate(string $sValue, string $sFormat = 'Y-m-d H:i:s') : bool

Example

// true
Date::validateDate('2022-10-09', 'Y-m-d');

---

getWeekNumberOnIsoDate

gives the week number of the requested simplified ISO Date (Y-m-d).

// gives 52
Date::getWeekNumberOnIsoDate('2023-12-26');

---

getAmountOfWeekNumbersOfYear

gives the amount of week numbers of the requested year (YYYY).

Date::getAmountOfWeekNumbersOfYear(int $iYear = 0) : int

Examples

// gives 52
Date::getAmountOfWeekNumbersOfYear(); # if empty, the curent year is set

// gives 53
Date::getAmountOfWeekNumbersOfYear(2020);